Feed-finger for saw-sharpeners.



No 746,982. a v PATENTED DEC 15, 1903.

. J. E. MGGAULEY & W. 0. RENIE.

FEED FINGER ,FOE SAW SHARPENERS.

APPLIGATIOR FILED APR. 23. 1903.

N0 MODEL.

2 SHEETS-SHEET 1.

E WITNESSFSE l/V VENTORJ' James zajf fkaicy 77Zim Cfflerqz'e PATENTBD DEC. 15, 1903.

2 SHEETS-SHEET. 2.

uma. WASHXNGTON. o c.

J. E. MOOAULEY & W. G. RENE. FEED FINGER FOR SAW SHARPENBRS.

APPL IOATION FILED APR. 23 Mp3.

N0 MODEL.

THE Nnnms vcrzas no won:

JAMES E. MGCAULEY AND WILLIAM C. RENIE, OF HOQUIAM, WASHINGTON.

Patented. December 15,1903.

PATENT OFFICE.

FEED-FINGER FOR SAW-SHARPENERS.

srncxrrcnrxon formingpart of Lead-s ttnt No. 746,982, dated. December 15, 1903. Application filed April'2 3, 1903. Serial No. 153.933. (No model.)

To all whom it maly concern: I

Be it known that we, JAMES E. MOCAULEY and WILLIAM C. BENIE, citizens of the United States, and residents of Hoquiam, in the county of Ohehalis and State of Washington, have invented a' new and Improved Feed.- Finger for Saw-Sharpeners, of which the following is a full, clear, and exact description},

This invention relates'toimprovements in feeding-fingers for band or gang saw grinding machines. In usual constructions the feed-finger or the head thereof engages with the tooth of a saw considerably below its'point against lumps or projections on the face, resulting in an uneven feed to the grindingwheel, and consequently the. tooth is not ground from the point to the base.

It is an object of our invention to obviate the above objections and so arrange the toothengaging head of the finger that it will engage a tooth at its point or swaged portion, and thus feed the saw the proper distance to cause the grinding-wheel to first strike a tooth at the point, and by its downward movement remove all projections and make an even surface.

We will describe a feed-finger for sawsharpeners embodying our invention and then point out the novel features in the appended claims.

Reference 1s to be had to the accompanying drawings, forming a part of this specification,

in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of a feed-finger for saw-sharpeners embodying our invention,

Fig. 2 is a plan view thereof. Fig. 3 isa sectional elevation. a means for adjusting the engaging head to the saw-tooth pitch, and Fig. 5 shows a vertical adjusting-wedge employed. I

The body of the finger as here shown consists of two sections 1 2, secured together by screws or bolts 3. This body is designed to be supported on a reciprocating part of a grinding-machine in the usual manner-such, for instance, ason the feed-lever J shown in the patent granted to H. P. Schofield, No. 654,844, of July 13, 1900. At one end of the body is the tooth-engaging head 4, having a longitudinal rib or finger 5, designed to engage with the saw-tooth near its point, as

Fig. 4'is a detail showing clearly indicated in Fig. 1. This head is adjustable lengthwise and also in a rotary di rection. It is provided with a threaded stem 6,-which passes through an opening in a lug. on the end of thebodyg'and the outer end of the stem is engaged by, a clamping-nut 8. The end of the lug 7' adjacent to the inner end of the head 4 is provided with a series of shoulders 9, arranged in difierent angles, so that by engaging the head-with any one of said shoulders the angle of the head may be regulated to the pitch of the sawtooth, and for the purposeof such engagement the head is adjustable lengthwise. From the pivotal point of the body a rod '10 extends rearward, and adjustable on this rod is a weight 11, designed to balance the free end of the finger, so as to cause it to bear lightly on the saw, and preventing wear on the under side of the feed-finger that rests on the saw as it passes over the teeth on the back movement. Extended along the under side of the finger-body and secured thereto by bolts is a spring-plate 12, having a shoe 13, of hardened steel, at its end, said shoe being designed to engage upon a rail or bed portion of the grinding machine frame during the movements of the finger. By making the shoe removable it is obvious that when it becomes worn a new one may readily be substituted ,7 by sliding the old one out and sliding a. new one in.

Arranged between the end of the body and the plate 12 is an adjusting device consisting of a wedge 14, from which a rod 15 extends through achannel16 formed in the under side of the finger, and the threaded end of this rod is engaged. by a thumb-nut 17. This thumbnut is provided with an annular channel to receive the walls of a notch 18 formed in an upward extension of the plate 12.

By manipulating the wedge 14 it is obvious that the engaging part of the head 4 may be raised or lowered to adjust it to the length of saw-tooth, and the resiliency of the plate 12 permits of such manipulation of the wedge. Adjustably attached to the under side of the body and near one side thereof is a gageblock 19, which gages the free endgof the finger with the rail or bed portion with the grinding-machine during the movements of the finger and prevents lateral motion.

Having thus described our invention, we claim as new and desire to secure by'Letters Patent- 1. A reciprocatory saw-finger for saws having swaged teeth, comprising a body portion, and a head arranged for engaging witha sawtooth at its point in the swaged portion'of the tooth, the said head being adjustable to the pitch of a saw-tooth.

2. A reciprocatory saw-finger for saws having swaged teeth, comprising a body, a head on the free end thereof and having a'rib-por-' tion for engaging with a saw-tooth at its point in the swaged portion of the tooth, means for holding said head in adjustment for the pitch of a saw-tooth, and means for adjusting said head to the length of a saw-tooth.

3. Asaw-feed fingerfo'rsaws having swaged teeth, comprising a body, a tooth-engaging head on the free end of the body, a springplate secured to the under side of the body, a wedge movable between said plate and'the body, and means for causing the movement of the wedge.

4. A saw fee'd finger, comprising a body, a tooth-engaging head .on thefree end of said body, a spring-plate attached to the under side of said body, a wedge movable between said plate and the body, and a removable shoe on said plate.

5. A saw-feed finger, comprising a body having a channel in its under side, an adj ustable head on the free "end of said body, a

JAMES E. MOCAULEY. WILLIAM QRENIE.

-Witnesses:

O. W. HODGDON, A. S. HODGDON. 

